Design and properties of cement coating with mussel shell fine aggregate

Martínez-García, Carolina; González-Fonteboa, Belén; Carro-López, Diego; Martínez-Abella, Fernando

doi:10.1016/j.conbuildmat.2019.04.211

Cited by 44 publications

(24 citation statements)

References 47 publications

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“…Nevertheless, sawdust small particles and wood fibers may have filled many gaps between and within them each other, thus enhancing stress transfer between both materials. This finding is in line with the previous literature of Martínez-García et al (2019), and González-Fonteboa et al (Rojo-López et al, 2022). The results also confirmed that the inclusion of FA in the mix design reduced compressive strength by around 26%, varying with the content of FA.…”

Section: Resultssupporting

confidence: 94%

Investigating the fresh and mechanical properties of wood sawdust-modified lightweight geopolymer concrete

Nikoo

Hafeez

Faridmehr

et al. 2023

Advances in Structural Engineering

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Geopolymer concrete has developed as a potential alternative to ordinary Portland cement-based concrete, wherein various industrial by-products have been converted as beneficial spin-offs. Apart from appropriate compressive strength in the construction sector worldwide, the durability, sound absorption, thermal conductivity, and weight of concrete are also major concerns. Lightweight geopolymer concretes have gained attention because of their superior strength, durability, lower environmental impact, and sustainable characteristics. In this view, the current study examined the feasibility of using sawdust as a natural fine and coarse aggregate substitution in fly ash (FA)-granulated blast furnace slag (GBFS) based geopolymer concrete. Four mixes with a different percentage of sawdust (25, 50, 75, and 100) substituting natural aggregate were designed to examine the effects of sawdust on fresh and hardened features of geopolymer concrete compared to those conventional FA-GBFS-based geopolymer concrete with natural aggregate. Sodium silicate (NS) and sodium hydroxide (NH) (with NS/NH ratio of 0.75) were utilized to dissolve the alumina silicate from FA and GBFS. Informational models were developed using an experimental dataset to estimate the compressive strength of geopolymer concrete mix designs. Besides, using the weight of the developed network, a global sensitivity (GS) analysis was developed to identify the sensitivity of compressive strength to the waste sawdust content. Test results confirmed that by substituting natural aggregate with 100% sawdust, there was around a 35% decrease in compressive strength. Nevertheless, the sound absorption coefficient was increased by an average of 38% in frequencies range between 1800 and 2500 HZ, and thermal conductivity decreased by around 4.5 times once the natural aggregate was substituted by 100% sawdust.

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Section: Resultssupporting

confidence: 94%

Investigating the fresh and mechanical properties of wood sawdust-modified lightweight geopolymer concrete

Nikoo

Hafeez

Faridmehr

et al. 2023

Advances in Structural Engineering

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“…The capillary action, on the other hand, shows a more interesting behavior; the capillary indexes for the reference material and the calibrated 0-4 mm MS-based mortar are approximately the same: 0.62 ± 0.04% vs. 0.61 ± 0.12%, respectively. That is in contrast with the results reported in [43] where a partial substitution of sand with MS led to a substantial capillary uptake decrease, with the main difference being that in this novel study the sand vs. MS substitution was complete. That is easily explainable by the fact that in the aggregate blend of [43], the thinnest MS particles generate a more homogeneous mortars matrix, while a whole MS aggregate, as the one considered in this study, basically behaves as a traditional sand aggregate.…”

Section: Materials Cost Estimationcontrasting

confidence: 99%

Recycling Mussel Shells as Secondary Sources in Green Construction Materials: A Preliminary Assessment

et al. 2023

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This paper reports the development of novel green bio-composite mortars obtained by reusing mussel shells, a waste from the fish canning industry, as recycled aggregate, used for the first time in total substitution to the traditional sand. It suggests that this is a valid alternative to their usual disposal in landfills because the organic matter is potentially dangerous to humans and the environment. Different waste-based cementitious mixes were tested and compared to a traditional OPC mortar. The manufacturing process was performed at ambient conditions (20 °C, 65% RH) with highly sustainable results and consisted of simple operative steps reproducible in a real building site. The engineering performance was investigated to preliminarily assess the novel material potentials in construction. The main results showed that recycling mussel shells as aggregate while considerably decreasing the mechanical resistance (up to 60% in bending and 50% in compression), mixes could still find proper building applications (either structural, light partition, and plastering) according to the relevant standards. Moreover, the bulk density resulted up to 30% lower and the energy behavior was improved up to 40%, making the developed mortars highly suitable for promising energy-saving uses. Finally, the waste recycling about halves the materials cost and could also grant further financial saving for the fish industry. To conclude, the large amount of reused bio-waste not only represents a valid alternative to their usual disposal in landfills, but also makes the considered mortars suitable for building applications and promising candidates for the Minimum Environmental Criteria certification, in light of the EU Green Transition, and in line with the principles of the circular economy.

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“…In recent years, biotechnology and pavement engineering materials have become increasingly closely integrated [11]. Bio-based materials have excellent properties, such as researchers have conducted numerous studies on the effects of shell waste on the properties of cementitious materials [42,43], there is a lack of exploration of the rheological properties of shellfish waste-modified asphalt. Considering the growing demand for the reuse of shell waste, recycling this material can reduce both environmental pollution and waste disposal costs.…”

Section: Introductionmentioning

confidence: 99%

Effect of Recycled Shell Waste as a Modifier on the High- and Low-Temperature Rheological Properties of Asphalt

Guo

Wang

et al. 2021

Sustainability

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The deteriorating ecological environment and the concept of sustainable development have highlighted the importance of waste reuse. This article investigates the performance changes resulting from the incorporation of shellac into asphalt binders. Seashell powder-modified asphalt was prepared with 5%, 10%, and 15% admixture using the high-speed shear method. The microstructure of the seashell powder was observed by scanning electron microscope test (SEM); the physical-phase analysis of the seashell powder was carried out using an X-ray diffraction (XRD) test; the surface characteristics and pore structure of shellac were analyzed by the specific surface area Brunauer-Emmett-Teller (BET) test; and Fourier infrared spectroscopy (FTIR) qualitatively analyzed the composition and changes of functional groups of seashell powder-modified asphalt. The conventional performance index of seashell powder asphalt was analyzed by penetration, softening point, and ductility (5 °C) tests; the effect of seashell powder on asphalt binder was studied using a dynamic shear rheometer (DSR) and bending beam rheometer (BBR) at high and low temperatures, respectively. The results indicate the following: seashell powder is a coarse, porous, and angular CaCO3 bio-material; seashell powder and the asphalt binder represent a stable physical mixture of modified properties; seashell powder improves the consistency, hardness, and high-temperature performance of the asphalt binder but weakens the low-temperature performance of it; seashell powder enhances the elasticity, recovery performance, and permanent deformation resistance of asphalt binders and improves high-temperature rheological properties; finally, seashell powder has a minimal effect on the crack resistance of asphalt binders at very low temperatures. In summary, the use of waste seashells for recycling as bio-modifiers for asphalt binders is a practical approach.

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Design and properties of cement coating with mussel shell fine aggregate

Cited by 44 publications

References 47 publications

Investigating the fresh and mechanical properties of wood sawdust-modified lightweight geopolymer concrete

Investigating the fresh and mechanical properties of wood sawdust-modified lightweight geopolymer concrete

Recycling Mussel Shells as Secondary Sources in Green Construction Materials: A Preliminary Assessment

Effect of Recycled Shell Waste as a Modifier on the High- and Low-Temperature Rheological Properties of Asphalt

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